<template>
  <div v-if="info"
       class="song-container">
    <div class="w1200">
      <div class="song-sidebar">
        <div class="sidebar">
          <div class="cover">
            <div class="cover-img"
                 :class="[isCurSong ? 'active' : '']"
                 @click.stop="plyaing(info)">
              <img src="@/assets/stylus.png"
                   class="cover-stylus" />
              <el-image :src="info.album.picUrl">
                <div slot="placeholder"
                     class="image-slot">
                  <i class="iconfont icon-placeholder"></i>
                </div>
              </el-image>
            </div>
            <div class="cover-desc"
                 v-if="coverDesc">
              <h5>专辑简介</h5>
              <p>{{coverDesc}}</p>
            </div>
            <div class="simi-song">
              <h6>相似歌曲</h6>
              <div class="simi-main">
                <div class="simi-item"
                     v-for="simiItem in simiSong"
                     :key="simiItem.id">
                  <div class="simi-info">
                    <router-link class="simi-name"
                                 :to="{ path: '/song', query: { id: simiItem.id }}">
                      {{ simiItem.name }}
                    </router-link>
                    <div class="simi-author">
                      <router-link :to="{ path: '/singer', query: { id: author.id }}"
                                   class="song-author"
                                   v-for="(author, k) in simiItem.singer"
                                   :key="author.name">{{ k !== 0 ? ' / ' + author.name : author.name }}</router-link>
                    </div>
                  </div>
                  <div class="simi-song-status">
                    <i v-if="simiItem.vip"
                       class="iconfont icon-vip"></i>
                    <i v-else
                       @click="plyaing(simiItem)"
                       :class="['iconfont', playSimiIcon(simiItem)]"></i>
                  </div>
                </div>
              </div>
            </div>
          </div>
        </div>
      </div>
      <div class="song-main">
        <h3 class="song-name">
          {{info.name}}
          <router-link class="mv-name"
                       :to="{ path: '/mv', query: { id: info.mvId }}"
                       v-if="info.mvId">
            <i class="iconfont icon-video"></i>
          </router-link>
          <i v-if="info.vip"
             class="iconfont icon-vip"></i>
          <div class="audio-icon"
               v-if="isCurSong">
            <div class="column"
                 style="animation-delay: -1.2s;"></div>
            <div class="column"></div>
            <div class="column"
                 style="animation-delay: -1.5s;"></div>
            <div class="column"
                 style="animation-delay: -0.9s;"></div>
            <div class="column"
                 style="animation-delay: -0.6s;"></div>
          </div>
        </h3>
        <p>
          <router-link :to="{ path: '/singer', query: { id: author.id }}"
                       class="song-author"
                       v-for="(author, k) in info.singer"
                       :key="author.name">{{ k !== 0 ? ' / ' + author.name : author.name }}</router-link>
        </p>
        <p class="song-info">
          <span>专辑：<router-link class="song-album"
                         :to="{ path: '/album', query: { id: info.album.id }}">{{ info.album.name }}</router-link></span>
          <span>发行时间：<em>{{info.publishTime}}</em></span>
        </p>
        <div class="song-oper">
          <span :class="['play-btn','play-all', songDisable]"
                @click="plyaing(info)"><i :class="['iconfont', playFontIcon]"></i> {{info.vip ? 'VIP尊享' : '立即播放'}}</span>
          <template v-if="!isLogin">
            <span class="play-btn play-collect"
                  @click="showAddList"><i class="iconfont icon-collect"></i> 收藏</span>
          </template>
          <el-popover placement="bottom"
                      trigger="click"
                      ref="popAddList"
                      v-else>
            <span class="play-btn play-collect"
                  slot="reference"><i class="iconfont icon-collect"></i> 收藏</span>
            <add-list :tracks="info.id"
                      @closeAddListPop="closeAddListPop"></add-list>
          </el-popover>
          <span class="play-btn play-comment"
                @click="jumpComment"><i class="iconfont icon-comment"></i> 评论</span>
        </div>
        <div class="song-lyric">
          <Lyrics :sId="sId"
                  local="page"></Lyrics>
        </div>
        <div class="song-comments"
             ref=comment>
          <Comments :type="type"
                    :id="sId"></Comments>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import { mapGetters, mapMutations, mapActions } from 'vuex'
import { formatSongInfo } from '@utils/song'
import Lyrics from '@components/common/lyrics.vue'
import Comments from '@components/common/comments.vue'
import addList from '@components/common/addlist.vue'
export default {
  name: 'song-detail',
  components: {
    Lyrics,
    Comments,
    addList
  },
  created () {
  },
  data () {
    // 这里存放数据
    return {
      info: null,
      sId: '0',
      type: 0, // 0: 歌曲 1: mv 2: 歌单 3: 专辑  4: 电台 5: 视频 6: 动态
      simiSong: []
    }
  },
  mounted () {
    this.sId = String(this.$route.query.id)
    this.init()
    window.addEventListener('scroll', this.handleScroll, true)
  },
  // 监听属性 类似于data概念
  computed: {
    ...mapGetters(['isLogin', 'playList', 'playIndex', 'isPlayed']),
    isCurSong () {
      return this.isPlayed && this.curSongInfo && this.curSongInfo.id === this.sId
    },
    // 当前播放状态
    playFontIcon () {
      return this.isCurSong ? 'icon-audio-pause' : 'icon-audio-play'
    },
    // 若是无版权获取vip歌曲 播放按钮置灰
    songDisable () {
      return (this.info.license || this.info.vip) ? 'disable' : ''
    },
    // 显示歌曲简介
    coverDesc () {
      return this.info.alia.join(' / ')
    },
    playSimiIcon () {
      return function (item) {
        return String(item.id) === this.curSongInfo.id && this.isPlayed ? 'icon-audio-pause' : 'icon-audio-play'
      }
    },
    curSongInfo () {
      return this.playList[this.playIndex]
    }
  },
  // 方法集合
  methods: {
    ...mapMutations({
      setLoginDialog: 'setLoginDialog',
      setPlayStatus: 'SET_PLAYSTATUS',
      setPlayList: 'SET_PLAYLIST',
      setPlayIndex: 'SET_PLAYINDEX'
    }),
    async getSongDetail () {
      const { data: res } = await this.$http.songDetail({ ids: this.sId, timestamp: new Date().valueOf() })

      if (res.code !== 200) {
        return this.$msg.error('数据请求失败')
      }

      // 是否有版权播放
      res.songs[0].license = !res.privileges[0].cp
      this.info = formatSongInfo(res.songs[0])
    },
    // 获取相似音乐
    async getSimiSong () {
      const { data: res } = await this.$http.simiSong({ id: this.sId })

      if (res.code !== 200) {
        return this.$msg.error('数据请求失败')
      }

      this.simiSong = res.songs.map(item => {
        return {
          id: String(item.id),
          name: item.name,
          mvId: item.mvid,
          singer: item.artists,
          album: item.album,
          alia: item.alias,
          duration: this.$utils.formatSongTime(item.duration),
          url: `https://music.163.com/song/media/outer/url?id=${item.id}.mp3`,
          vip: item.fee === 1,
          license: item.license,
          publishTime: item.publishTime
        }
      })
    },
    plyaing (params) {
      // 若当前唔歌曲 或者 当前播放歌曲不是本页显示的歌曲  立即播放当前页面歌曲
      if (!this.curSongInfo || this.curSongInfo.id !== params.id) {
        // 无版权及vip不可播放
        if (params.license) {
          this.$msg.error('由于版权保护，您所在的地区暂时无法使用。')
          return
        }

        if (params.vip) {
          this.$msg.error('付费歌曲，请在网易云音乐播放')
          return
        }

        this.selectPlay({
          list: [params]
        })
      } else {
        this.setPlayStatus(!this.isPlayed)
      }
    },
    closeAddListPop () {
      this.$refs.popAddList.doClose()
    },
    jumpComment () {
      this.$refs.comment.scrollIntoView(true)
    },
    init () {
      this.getSongDetail()
      this.getSimiSong()
    },
    showAddList () {
      if (!this.isLogin) {
        this.setLoginDialog(true)
        return false
      }
    },
    ...mapActions(['selectPlay', 'playAll'])
  },
  watch: {
    $route: {
      handler () {
        this.sId = this.$route.query.id
        this.init()
      },
      deep: true
    }
  }
}
</script>
<style scoped lang="less">
.song-container {
  padding: 40px 0;

  .song-sidebar {
    position: fixed;
    width: 310px;
  }

  .song-main {
    position: relative;
    margin-left: 400px;
  }
}

.cover {
  position: relative;
}
.cover-img {
  position: relative;
  width: 190px;
  padding: 40px;
  font-size: 0;
  background: url('../../assets/disc.png') no-repeat;
  background-size: contain;
  cursor: pointer;

  .cover-stylus {
    position: absolute;
    right: 0;
    top: 0;
    z-index: 1;
    display: inline-block;
    width: 30px;
    height: 120px;
    transition: all 0.3s;
    transform-origin: 23px 5px;
    transform: rotateZ(-30deg);
  }

  .el-image {
    width: 190px;
    height: 190px;
    border-radius: 100%;
    animation: soundPaying 15s linear infinite;
    animation-play-state: paused;
  }

  &.active {
    .cover-stylus {
      transform: rotateZ(0);
    }

    .el-image {
      animation-play-state: running;
    }
  }

  // &::after {
  //     content: '';
  //     position: absolute;
  //     top: 50%;
  //     left: 50%;
  //     z-index: 2;
  //     width: 30px;
  //     height: 30px;
  //     border-radius: 100%;
  //     transform: translate(-50%,-50%);
  //     background: #000;
  //     box-shadow: 0px 2px 10px 20px rgba(150, 150, 150, 0.5);
  // }

  .iconfont {
    position: absolute;
    z-index: 3;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #fff;
  }
}

.cover-desc {
  h5 {
    margin-top: 40px;
    margin-bottom: 10px;
    font-size: 22px;
    font-weight: 600;
    height: 30px;
    line-height: 30px;
  }

  p {
    width: 100%;
    font-size: 14px;
    color: #999;
    line-height: 21px;
    word-break: break-all;
  }
}

.simi-song {
  h6 {
    margin-top: 20px;
    margin-bottom: 10px;
    font-size: 14px;
    height: 30px;
    line-height: 30px;
  }
  .simi-name {
    line-height: 20px;
    font-size: 12px;
    color: #000;
  }

  .simi-author {
    font-size: 0;

    a {
      font-size: 12px;
      color: #999;
    }
  }

  .simi-item {
    display: flex;
    padding-top: 5px;
    border-bottom: 1px solid #f2f2f2;
    margin-bottom: 5px;
  }

  .simi-info {
    flex: 1;
  }

  .simi-song-status {
    line-height: 48px;

    i {
      cursor: pointer;
    }
  }
}

.song-name {
  font-size: 30px;
  line-height: 60px;
  padding-bottom: 10px;

  .iconfont {
    margin-right: 10px;
    font-size: 24px;
    color: @color-theme;
  }

  .audio-icon {
    display: inline-flex;
  }
}
.song-author {
  display: inline-block;
  font-size: 18px;
  color: #666;
  line-height: 18px;
}

.song-info {
  padding: 20px 0;
  font-size: 0;
  color: #999;

  span {
    display: inline-block;
    padding-right: 30px;
    font-size: 14px;
    font-weight: 400;
    line-height: 20px;
  }

  a,
  em {
    color: #333;
    font-style: normal;
  }
}

.song-oper {
  .play-btn {
    display: inline-block;
    line-height: 16px;
    align-items: center;
    border-radius: 50px;
    padding: 7px 15px;
    cursor: pointer;
    margin: 5px 15px 5px 0;
    background: #f0f0f0;
    color: #333;
  }

  .play-all {
    color: #fff;
    background: @color-theme;
    i {
      color: #fff;
    }
  }

  .disable {
    background: #ccc;
    cursor: not-allowed;
  }
}

@keyframes soundPaying {
  from {
    -webkit-transform: rotate(10deg);
    transform: rotate(10deg);
  }

  to {
    -webkit-transform: rotate(370deg);
    transform: rotate(370deg);
  }
}

.song-lyric {
  margin: 30px 0 10px;
  overflow-y: auto;
}

.song-comments {
  margin: 10px 0 30px;
}
</style>
